dtzjvj3915 2013-03-12 14:19
浏览 184

将多个文本框中的值作为数组提交

Basically what I want my program to do is to ask the user how many numbers they want to enter. Once the value is submitted, the program will take the value and create this amount of textboxes. Each textbox will take a number and once submitted, it should take all the numbers (excluding the initial text box) and store it into an array or something so the mean can be calculated.

I've been able to get as far as creating x amount of textboxes but cannot find a way to submit these values. 

<html>
<body>

<form action="means.php" method = "get">
Enter sample size: <input type = "number" name = "size" <br>
<input type = "submit">

<?php 
if ( isset($_GET["size"] ) )
{
$size = $_GET["size"];
$count = 1;
while ($count <= $size)
    {
    echo '<br><input type=\"text\"  name=\"textbox".$count."\" />';
    $count++;

    }
}
?>
</form>



</html>
</body>

I assume the problem is that the textboxes created are being echoed so the name "textbox.$count." cannot be used to obtain the numbers?

Any help would be greatly appreciated. Thanks in advance!

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  • doudi4137 2013-03-12 14:23
    关注

    Just use PHP's array notation for form field names:

    <input type="text" name="textbox[]" />
                                ^^---force array mode

    which will produce an array in $_POST['textbox'], one element for each textbox which was submitted with the textbox[] name.

    e.g:

    <input type="text" name="textbox[]" value="1" />
<input type="text" name="textbox[]" value="foo" />
<input type="text" name="textbox[]" value="banana" />

    produces

    $_POST = array(
   'textbox' => array )
         0 => 1,
         1 => 'foo',
         2 = > 'banana'
   )
)

    Your problem is that you're using single-quoted strings ('), meaning that

    $var = 'foo';
echo '$var'  // outputs $, v, a, r
echo "$var"  // outputs f, o ,o
    评论

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